Technical data

Product Specification
HIF-2121/R5 CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 965-1176-601 REV: D SHEET 27
1.3.5 System Elements
1.3.5.1 Architecture
Figure 1.3.5.1-1 provides a typical block diagram of MKVI EGPWS inputs, Figure 1.3.5.1-2 for outputs. When used, the
terrain display output is provided either directly to the DSU, or to display switching relays. The mode curves below are
typical, other outputs are possible via configurable mode curves.
The following table summarizes the type and quantity of I/O available with both versions of the EGPWC.
Input/Output Type
Note: Applies to 965-1176, 965-1186, 965-1206, 965-1216.
Quantity
ARINC 429 inputs.
The inputs can be software programmed for either high or low speed operation.
8
RS-232/RS-422 inputs. 2
RS-422/ARINC 429 inputs. 1
ARINC 429 output channels (MKVIII EGPWS only) 2
ARINC 429 output channels 1
Picture Bus (ARINC 453/708) output channels. 2
RS-232/RS-422 outputs. 2
3 wire AC analog input channels. 5
2 wire DC analog input channels. 7
Ground activated input discretes. 15
+28VDC activated input discretes. 10
+28V DC activated validity input 3
Configuration Module Interface (requires 6 wires) 1
Smart Cable Interface (requires 8 wires) 1
Discrete outputs.
Drivers for Lamps.
12
Audio outputs.
An 8-ohm speaker output and a 600-ohm interphone. The audio volume levels are software
controlled.
2
Front connector RS-232 interface. 1
TABLE 1.3.5.1-1: EGPWC I/O
Front panel status LEDs are also provided for maintenance and fault isolation.
The primary processing is accomplished with a PowerPC
TM
microprocessor.